---
product_id: 1280124
title: "GM Genuine Parts 15-11057 (12600172) Engine Coolant Thermostat Water Inlet Assembly"
brand: "gm genuine parts"
price: "¥13488"
currency: JPY
in_stock: true
category: "Gm Genuine Parts"
url: https://www.desertcart.jp/products/1280124-gm-genuine-parts-15-11057-12600172-engine-coolant-thermostat-water
store_origin: JP
region: Japan
---

# Prevents engine overheating effectively Steel thermostat housing for durability GM OE spec for perfect fit & function GM Genuine Parts 15-11057 (12600172) Engine Coolant Thermostat Water Inlet Assembly

**Brand:** gm genuine parts
**Price:** ¥13488
**Availability:** ✅ In Stock

## Summary

> 🔥 Keep your engine cool, your drive smooth ⚙️

## Quick Answers

- **What is this?** GM Genuine Parts 15-11057 (12600172) Engine Coolant Thermostat Water Inlet Assembly by gm genuine parts
- **How much does it cost?** ¥13488 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/1280124-gm-genuine-parts-15-11057-12600172-engine-coolant-thermostat-water)

## Best For

- gm genuine parts enthusiasts

## Why This Product

- Trusted gm genuine parts brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Leak-Proof Design:** Repairs leaking thermostat housings to protect your engine
- • **Backed by Warranty:** 24-month unlimited mile limited warranty for peace of mind
- • **Vehicle-Specific Fit:** Tailored for seamless installation on GM vehicles, no guesswork needed
- • **OEM-Grade Reliability:** Manufactured to GM Original Equipment standards for guaranteed quality
- • **Precision Engine Cooling:** Engineered to prevent overheating and maintain optimal temperature

## Overview

The GM Genuine Parts 15-11057 Engine Coolant Thermostat Water Inlet Assembly is a steel, GM OE-spec replacement part designed to prevent engine overheating and repair leaking thermostat housings. Engineered and tested to rigorous standards, it ensures a perfect fit and reliable performance for GM vehicles, backed by a 24-month unlimited mile warranty.

## Description

GM Genuine Parts Engine Coolant Thermostate Housing Assemblies are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

## Features

- Repairs leaking thermostat housings
- Corrects engine overheating caused by failed thermostat
- GM-recommended replacement part for your GM vehicle’s original factory component
- Offering the quality, reliability, and durability of GM OE
- Manufactured to GM OE specification for fit, form, and function; Thermostat Material: Steel

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002VVC4TG |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #86,008 in Automotive ( See Top 100 in Automotive ) #103 in Automotive Replacement Engine Thermostats |
| Brand Name | GM GENUINE PARTS |
| Compatible with Vehicle Type | Basic |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,116) |
| Global Trade Identification Number | 40707773594795 |
| Included Components | Water Inlet Assembly |
| Item Type Name | Water Inlet Assembly |
| Item Weight | 10.56 ounces |
| Manufacturer | ACDelco |
| Manufacturer Part Number | 12600172 |
| Manufacturer Warranty Description | 24 Month / Unlimited Mile Limited Warranty on parts sold on or after 04/01/18. (Parts Only) Please see ACDelco.com for more details. |
| Material Type | Basic |
| Model Number | 15-11057 |
| Number of Items | 1 |
| OEM Equivalent Part Number | 12600172 |
| Part Interchange Info | 15-11057 |
| UPC | 707773594797 |
| Unit Count | 1 Count |
| Weight Class | one |

## Product Details

- **Automotive Fit Type:** Vehicle Specific Fit
- **Brand:** GM GENUINE PARTS
- **Global Trade Identification Number:** 40707773594795
- **Item Weight:** 10.56 ounces
- **Manufacturer:** ACDelco
- **Material:** Basic
- **OEM Part Number:** 12600172
- **Unit Count:** 1 Count
- **Vehicle Service Type:** Basic
- **Weight Class:** one

## Images

![GM Genuine Parts 15-11057 (12600172) Engine Coolant Thermostat Water Inlet Assembly - Image 1](https://m.media-amazon.com/images/I/31T3sYHWTDL.jpg)

## Questions & Answers

**Q: How does my vehicle’s AC system work?**
A: The AC compressor pressurizes refrigerant gas, which moves to the condenser. The gas releases heat, condensing into a high-pressure liquid. After cooling, the liquid passes over evaporator coils to cool the air as it is blown through the vents.

**Q: What are the signs the system needs service?**
A: Common indicators of an air conditioning system in need of service include warm and/or weak airflow through the vents, frequent on/off cycling of the system and a strange or musty odor.

**Q: Is the puddle of water under my car a sign of AC problems?**
A: Not necessarily. Condensation typically builds up on the AC evaporator and the water is drained at the bottom of the vehicle. That’s normal, but a larger puddle combined with reduced AC performance could indicate a problem.

**Q: Does low refrigerant mean there’s a leak in the system?**
A: In most cases the answer is yes. AC systems in older cars will experience refrigerant leakage over time, but a later-model vehicle that needs continual refrigerant recharging typically indicates a leak.

**Q: Can a new cabin air filter improve AC performance?**
A: Yes. A very dirty or clogged cabin air filter can reduce the airflow of the AC system, reducing its cooling efficiency and making the system work harder than normal. Periodic cabin filter replacements help the AC system keep its cool.

## Frequently Bought Together

- ACDelco GM Genuine Parts 15-11057 Engine Coolant Thermostat Water Inlet Assembly
- ACDelco Gold 252-845 (19195104) Engine Water Pump
- ACDelco Gold 38158 Drive Belt Tensioner Assembly with Pulley, Aluminum w/ Black Pulley

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**Shop now:** [https://www.desertcart.jp/products/1280124-gm-genuine-parts-15-11057-12600172-engine-coolant-thermostat-water](https://www.desertcart.jp/products/1280124-gm-genuine-parts-15-11057-12600172-engine-coolant-thermostat-water)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-11-04*